Cupola.



W. J. TRIIGK.

CUPOLA.

APPLIGATION FILED FEB. 5, 1912.

1,080,241 Patented Dec.2, 1913.

CQLUMBM PLANGGRAPH CO..WASMIN51TON. Dfc.

WILLIAM J. TRIICK, OF HAMILTON, OHIO.

CUPOLA.

Specification of Letters Patent.

Patented Dec. 2, 1913.

Application 1ed February 5, 1912. Serial No. 675,472.

To all 'whom z5 may concern.'

Be it known that` I, WILLIAM J. Timon, a citizen of the United States, residing at Hamilton, Ohio, have invented a new and useful Improvement in Cupolas, of which the following is a specification.

My invention relates to cupolas ofthe class adapted to the use of foundries for melting iron or for other suitable purposes, andthe objects of my improvements are to provide a sectional water jacket to protect and increase the durability of the fire lining; to provide an annular `air chamber for facilitating the even distribution of the air from the bustle pipe to the twyers, and to provide simple and durable construction and assemblage of the various members for securing facility of operation and efficiency of action. These objects may be attained in the following described manner, as illustrated in the accompanying drawings, in which:

Figure 1 is a diamet-rical section of a cupola embodying my improvements; Figs. 2 and 3 horizontal sections on the respective lines a and b of Fig. 1; Figs. 4 and 5 perspective views showing respectively the inner concave and outer convex walls of different section members of the water jacket.

In the drawings, 1 represents the base supported on legs 2 and provided with the hinged bo-ttom 3, 4 the metal cylindrical shell supported on the base, and 5 the brick lire lining therein, 6 and 7 superposed series of twyers, 8 the discharge opening for the metal, and 9 the bustle pipe, all being constructed and arranged in the ordinary manner.

rlhe annular water jacket 11 consists of a series of interchangeable hollow metal sections 12 placed within the shell adjacent to each other and converged in a downward direction to form the encircling air chamber.

13 within the shell. Each of said sections is formed with intermediate and bottom recesses 111 and 15 in its edges adapted to register with the corresponding recesses in the adjacent sections for the passage of the twyers of series 6 and 7 therethrough from the air chamber 13 to the interior of the cupola. In addition to the recesses 11i and 15, a walled opening 16 and a bottom recess 17 may be formed in each section 12 to provide for the insertion therethrough of an increased number of twyers when desired.

A water pipe 18 supplied through a connection 19 with a source of water (not shown) encircles the shell I1 and communicates therethrough by means of nipples 21 with the interior bottom portion of each of the sections 12. A similar overflow pipe 22 provided with discharge connections 23 encircles the shell and is connected with the interior top portion of each of the sections 12 by means of nipples 23. The current of water thus provided through each of the sections 12 serves to partially counteract the excessive heat of which the thin adjacent portion 211 of the lire lining is exposed and thereby protect and prolong its durability.

Communication of the bustle pipe 9 with the annular air chamber 13 is provided by means of a series of tubular connections 25. In operation, the air chamber 13 intervening between the bustle pipe and the twyers serves to supply the air to the twyers more evenly and steadily than would be possible if it were dispensed with. The water jacket serves also to maintain the air in its passage through chamber 13 at a moderate and uniform temperature. The thin portion of the lire lining adjacent to the water jacket is thereby protected and its durability materially increased to withstand the prolonged and excessive heat to which it is exposed.

Having fully described my improvements, what I claim as my invention and desire to secure by Letters Patent of the United States is:

1. In a cupola, the combination with an outer metal shell, of a fire-brick lining decreasing in thickness near the bottom so as to form next to said shell an annular air chamber the inner wall of .which chamber inclines downwardly toward the center of the cupola, a water jacket located in said chamber against the firebrick o-n the inclined side of said chamber which jacket decreases in thickness toward its top, a bustle pipe about said shell and having frequent connections with the base of said air chamber, two series of twyers at dierent altitudes passing from said air chamber through said water jacket and the lire-brick lining, an inlet water manifold about the furnace at the lower end of said air chamber and having frequent connections through said chamber to said water jacket, and an outlet water manifold about the furnace at the upper end of the air chamber and having frequent connections with the water jacket.

2. In a cupola, the combination with an outer metal shell, of a hre-brick lining decreasing in thickness near the bottom of the cupola so as to form neXt to said shell an annular air chamber the inner wall of which chamber inclines downwardly toward the center of the cupola, a water jacket located in said chamber against the fire-brick on the inclined side of saidl chamber which jacket decreases in thickness toward its top, said water jacket being made up of hollow metal' sections provided with registering recesses on their edges, a bustle pipe about said shell and having frequent connections with the base of said air chamber, twyers passing from said air chamber through said recesses in t-he adjacent edgesof the sections of the water jacket and through the tire-brick, an inlet water manifold about the furnace at the lower end of said air chamber and having a connection through said chamber to each section of the wat-er jacket, and an outlet water manifold about the furnace at the upper end of said air chamber and having a connection to the upper `end of each section of the water jacket.` i Y WM. J. TRUCK. Witnesses:

JOHN W. WILLIAMS,

R.V S; CARR.

Copies of this patent may be obtained for five cents' each, by addressing the Commissioner of Patents, Washington, D; C. 

